Surface tension of liquid Fe-Cr-O alloys at 1823 K

Joonho Lee, Koji Yamamoto, Kazuki Morita

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The surface tension of liquid Fe-Cr-O alloys has been determined by using the sessile drop method at 1823 K. It was found that the surface tension of liquid Fe-Cr-O alloy markedly decreases with oxygen content at constant chromium content, and the surface tension at a given oxygen content remains almost constant, regardless of the chromium content. When the surface tension of liquid Fe-Cr-O alloys is plotted as a function of oxygen activity, with an increase in the chromium content, the surface tension shows a much steeper decrease with respect to oxygen activity. The surface tension of liquid Fe-Cr-O alloys at 1823 K is given as follows: σ = 1842 - 279 In (1 + K OU O). Here, assuming a Langmuir-type adsorption isotherm, the adsorption coefficient of oxygen, K O(Fe-Cr), as a function of chromium content, was shown to be K O = 140 + 4.2 × [wt pet Cr] + 1.14 × [wt pet Cr] 2.

Original languageEnglish
Pages (from-to)241-246
Number of pages6
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume36
Issue number2
Publication statusPublished - 2005 Apr 1
Externally publishedYes

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Surface tension
Chromium
Oxygen
Liquids
Adsorption isotherms
Adsorption

ASJC Scopus subject areas

  • Materials Science(all)
  • Metals and Alloys

Cite this

Surface tension of liquid Fe-Cr-O alloys at 1823 K. / Lee, Joonho; Yamamoto, Koji; Morita, Kazuki.

In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 36, No. 2, 01.04.2005, p. 241-246.

Research output: Contribution to journalArticle

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